Hiring a car/pick up to drive Hua Hin to Krabi

We are due to spend 10 days in HH in November, as a potential to see what it would be like to retire early (we’d plan additional trips each year as retirement is 3 years away).  Next stop in November after HH is Krabi for a few days.  
 

Rather than train/taxi up up BKK and then fly down, we (me and English partner) are considering hiring a car for 3 days and taking a slow drive down, stopping off in Chumphon maybe for a night. 

are there any rental companies in HH where we can hire a car (ideally a pick up, Ranger etc) and then drop it off in Krabi, then fly back to BKK for the rest of our trip

thank you all in advance